#deb http://ftp.fr.debian.org/debian/ stretch main contrib non-free
#deb http://security.debian.org/ stretch/updates main
#deb http://ftp.fr.debian.org/debian/ stretch-updates main

deb http://deb.debian.org/debian/ buster main contrib non-free
deb http://security.debian.org/debian-security buster/updates main contrib non-free
deb http://deb.debian.org/debian/ buster-updates main contrib non-free